Bryant II607C-19 User manual

Brand: Bryant

Model: II607C-19

Category: Heat pumps

Type: User manual

Installation Instruction

IMPORTANT: Effective January 1, 2023, all split system and packaged

air conditioners must be installed pursuant to applicable regional

efficiency standards issued by the Department of Energy.

NOTE: Read the entire instruction manual before starting the

installation.

NOTE: Installer: Make sure the Owner’s Manual and Service

Instructions are left with the unit after installation.

Table of Contents

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Receiving and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Identify Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Inspect Shipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Slab Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Rigging/Lifting of Unit (See Fig. 5) . . . . . . . . . . . . . . . . . . . . . . 8

Configuring Units for Downflow (Vertical) Discharge . . . . . . . 8

High-Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Special Procedures for 208-V Operation . . . . . . . . . . . . . . . . . 10

Control Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Standard Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Transformer Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Accessory Electric Heaters Installation . . . . . . . . . . . . . . . . . . 10

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Pre-Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Checking Cooling and Heating Control Operation. . . . . . . . . . 19

Checking and Adjusting Refrigerant Charge . . . . . . . . . . . . . . 20

Indoor Airflow and Airflow Adjustments . . . . . . . . . . . . . . . . 20

Single Cooling Fan Speed Set-up (Dehumidification feature not

used) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Two Cooling Fan Speeds Set-up (Dehumidification feature used)

Single Speed Cooling With Higher Electric Heat Speed . . . . . 21

Continuous Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Demand Defrost Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Indoor Blower and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Servicing Systems on Roofs with Synthetic Materials. . . . . . . 29

Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Puron (R-410A) Refrigerant Charging . . . . . . . . . . . . . . . . . . . 29

Loss of Charge Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Check Defrost Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Start-Up Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

A09033

Fig. 1 – Unit 607C

Safety Considerations

Installation and servicing of this equipment can be hazardous due to

mechanical and electrical components. Only trained and qualified

personnel should install, repair, or service this equipment.

Untrained personnel can perform basic maintenance functions such as

cleaning and replacing air filters. All other operations must be performed

by trained service personnel. When working on this equipment, observe

precautions in the literature, on tags, and on labels attached to or shipped

with the unit and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses, protective clothing, and

work gloves. Use quenching cloth for brazing operations. Have a fire

extinguisher available. Read these instructions thoroughly and follow all

warnings or cautions included in literature and attached to the unit.

Consult local building codes, the current editions of the National

Electrical Code (NEC) NFPA 70.

607C--K

Legacy™ 13.4 SEER2 Single-Packaged Heat Pump

System with Puron® (R-410A) Refrigerant

Single Phase 2-5 Nominal Tons (Sizes 24-60)

Three Phase 3-5 Nominal Tons (Sizes 36-60)

In Canada refer to the current editions of the Canadian Electrical Code

CSA C22.1.

Recognize safety information. This is the safety-alert symbol . When

you see this symbol on the unit and in instructions or manuals, be alert to

the potential for personal injury. Understand these signal words:

DANGER, WARNING, and CAUTION. These words are used with the

safety-alert symbol. DANGER identifies the most serious hazards which

will result in severe personal injury or death. WARNING signifies

hazards which could result in personal injury or death. CAUTION is

used to identify unsafe practices which may result in minor personal

injury or product and property damage. NOTE is used to highlight

suggestions which will result in enhanced installation, reliability, or

operation.

Introduction

This heat pump is fully self-contained and designed for outdoor

installation. (See Fig. 1) Standard units are shipped in a

horizontal-discharge configuration for installation on a ground level

slab. Standard units can be converted to downflow (vertical) discharge

configurations for rooftop applications.

Receiving and Installation

Step 1 – Check Equipment

Identify Unit

The unit model number and serial number are stamped on the unit

identification plate. Check this information against shipping papers.

Inspect Shipment

Inspect for shipping damage before removing packaging material. If unit

appears to be damaged or is torn loose from its anchorage, have it

examined by transportation inspectors before removal. Forward claim

papers directly to transportation company. Manufacturer is not

responsible for any damage incurred in transit. Check all items against

shipping list. Immediately notify the nearest equipment distributor if any

item is missing. To prevent loss or damage, leave all parts in original

packages until installation.

If the unit is to be mounted on a curb in a downflow application, review

Step 5 to determine which method is to be used to remove the downflow

panels before rigging and lifting into place. The panel removal process

may require the unit to be on the ground.

Step 2 – Provide Unit Support

Roof Curb

Install accessory roof curb in accordance with instructions shipped with

curb (See Fig. 4). Install insulation, cant strips, roofing, and flashing.

Ductwork must be attached to curb.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a

watertight seal. Install gasketing material supplied with the roof curb.

Improperly applied gasketing also can result in air leaks and poor unit

performance.

Curb should be level to within 1/4 in. (6 mm) (See Fig. 7). This is

necessary for unit drain to function properly. Refer to accessory roof

curb installation instructions for additional information as required.

Installation on older “G” series roof curbs.

Two accessory kits are available to aid in installing a new “G” series unit

on an old “G” roof curb.

1. Accessory kit number CPADCURB001A00, (small chassis) and

accessory kit number CPADCURB002A00, (large chassis) includes

roof curb adapter and gaskets for the perimeter seal and duct

openings. No additional modifications to the curb are required

when using this kit.

2. An alternative to the adapter curb is to modify the existing curb by

removing the outer horizontal flange and use accessory kit number

CPGSKTKIT001A00 which includes spacer blocks (for easy

alignment to existing curb) and gaskets for the perimeter seal and

duct openings. This kit is used when existing curb is modified by

removing outer horizontal flange.

Slab Mount

Place the unit on a solid, level pad that is at least 2 in. (51 mm) above

grade (See Fig. 8). The pad should extend approximately 2 in. (51 mm)

beyond the casing on all 4 sides of the unit. Do not secure the unit to the

pad except when required by local codes.

Step 3 – Provide Clearances

The required minimum service clearances are shown in Fig. 2 and Fig. 3.

Adequate ventilation and outdoor air must be provided. The outdoor fan

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing or servicing system, always turn off main power to

system and install lockout tag. There may be more than one disconnect

switch. Turn off accessory heater power switch if applicable.

CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

When removing access panels (see Fig. 23 or performing maintenance

functions) inside your unit, be aware of sharp sheet metal parts and

screws. Although special care is taken to reduce sharp edges to a

minimum, be extremely careful and wear appropriate clothing, safety

glasses and gloves when handling parts or reaching into the unit.

WARNING

PERSONAL INJURY AND PROPERTY DAMAGE

HAZARD

For continued performance, reliability, and safety, the only approved

accessories and replacement parts are those specified by the equipment

manufacturer. The use of non-manufacturer approved parts and

accessories could invalidate the equipment limited warranty and result

in fire risk, equipment malfunction, and failure. Please review

manufacturer's instructions and replacement part catalogs available

from your equipment supplier.

NOTICE

If the unit gasketing or insulation must be replaced, ensure the material

used is compliant with the two agency requirements listed.

1. Insulation and adhesives shall meet NFPA 90.1 requirements for

flame spread and smoke generation.

2. Cabinet insulation shall meet ASHRAE Standard 62.2.

CAUTION

UNIT/STRUCTURAL DAMAGE HAZARD

Failure to follow this caution may result in property damage.

Ensure there is sufficient clearance for saw blade when cutting the outer

horizontal flange of the roof curb so there is no damage to the roof or

flashing.

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

draws air through the outdoor coil and discharges it through the top fan

grille. Be sure that the fan discharge does not recirculate to the outdoor

coil. Do not locate the unit in either a corner or under an overhead

obstruction. The minimum clearance under a partial overhang (such as a

normal house overhang) is 48 in. (1219 mm) above the unit top. The

maximum horizontal extension of a partial overhang must not exceed 48

in. (1219 mm).

IMPORTANT: Do not restrict outdoor airflow. An air restriction at

either the outdoor-air inlet or the fan discharge may be detrimental to

compressor life.

Do not place the unit where water, ice, or snow from an overhang or roof

will damage or flood the unit. Do not install the unit on carpeting or

other combustible materials. Slab-mounted units should be at least 2 in.

(51 mm) above the highest expected water and runoff levels. Do not use

unit if it has been under water.

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221482

Fig. 2 – 24-30 Unit Dimensions

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221483

Fig. 3 – 36-60 Unit Dimensions

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A180216

Fig. 4 – Roof Curb Dimensions

NOTES:

1. Roof curb must be set up for unit being installed.

2. Seal strip must be applied, as required, to unit being installed.

3. Roof curb is made of 16-gauge steel.

4. Attach ductwork to curb (flanges of duct rest on curb).

5. Insulated panels: 1-in. (25 mm) thick fiberglass 1 lb. density.

UNIT

SIZE

CATALOG

NUMBER

IN.

(mm)

B (small/common

base)

IN. (mm)*

*. Part Number CPRCURB011B00 can be used on both small and large basepan units. The cross supports must be located based on whether the unit is a small basepan or a large

basepan.

B (large

base)

IN. (mm)*

IN.

(mm)

IN. (mm)

IN.

(mm)

IN. (mm)

Small or

Large CPRFCURB011B00 14 (356) 10 (254)

14 (356) 16 (406) 47.8

(1214)

32.4 (822)

2.7 (69)

30.6 (778)

46.1 (1170)

Large CPRFCURB013B00 14 (356) 14 (356) 43.9 (1116) 42.2

(1072)

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A09051

NOTE: See dimensional drawing for corner weight distribution.

Fig. 5 – Rigging Weights

Step 4 – Rig and Place Unit

Rigging and handling of this equipment can be hazardous for many

reasons due to the installation location (roofs, elevated structures, etc.).

Only trained, qualified crane operators and ground support staff should

handle and install this equipment.

When working with this equipment, observe precautions in the literature,

on tags, stickers, and labels attached to the equipment, and any other

safety precautions that might apply.

Training for operators of the lifting equipment should include, but not be

limited to, the following:

1. Application of the lifter to the load, and adjustment of the lifts to

adapt to various sizes or kinds of loads.

2. Instruction in any special operation or precaution.

3. Condition of the load as it relates to operation of the lifting kit, such

as balance, temperature, etc.

Follow all applicable safety codes. Wear safety shoes and work gloves.

Inspection

Prior to initial use, and at monthly intervals, all rigging shackles, clevis

pins, and straps should be visually inspected for any damage, evidence

of wear, structural deformation, or cracks. Particular attention should be

paid to excessive wear at hoist hooking points and load support areas.

Materials showing any kind of wear in these areas must not be used and

should be discarded.

1. Leave top shipping skid on the unit for use as a spreader bar to

prevent the rigging straps from damaging the unit. If the skid is not

available, use a spreader bar of sufficient length to protect the unit

from damage.

RIGGING WEIGHTS (SMALL CABINET) RIGGING WEIGHTS (LARGE CABINET)

Unit 24 30 Unit 36 42 48 60

lb kg lb kg lb kg lb kg lb kg lb kg

Rigging Weight 343 155.6 376 170.6 Rigging Weight 420 190.6 440 199.6 440 199.6 510 231.4

WARNING

PERSONAL INJURY OR PROPERTY DAMAGE

HAZARD

Failure to follow this warning could result in personal injury, death or

property damage.

When installing the unit on a rooftop, be sure the roof will support the

additional weight. WARNING

UNIT FALLING HAZARD

Failure to follow this warning could result in personal injury or death.

Never stand beneath rigged units or lift over people.

WARNING

PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal injury or death.

When straps are taut, the clevis should be a minimum of 36 in. (914

mm) above the unit top cover.

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Rigging/Lifting of Unit (See Fig. 5)

Lifting holes are provided in base rails as shown.

1. Attach shackles, clevis pins, and straps to the base rails of the unit.

Be sure materials are rated to hold the weight of the unit (See

Fig. 5).

2. Attach a clevis of sufficient strength in the middle of the straps.

Adjust the clevis location to ensure unit is lifted level with the

ground.

After the unit is placed on the roof curb or mounting pad, remove the top

skid.

Step 5 – Select and Install Ductwork

The design and installation of the duct system must be in accordance

with the standards of the NFPA for installation of non-residence type air

conditioning and ventilating systems, NFPA 90A or residence-type,

NFPA 90B and/or local codes and ordinances.

Select and size ductwork, supply-air registers, and return air grilles

according to ASHRAE (American Society of Heating, Refrigeration,

and Air Conditioning Engineers) recommendations.

The unit has duct flanges on the supply- and return-air openings on the

side of the unit.

When designing and installing ductwork, consider the following:

1. All units should have field-supplied filters or accessory filter rack

installed in the return-air side of the unit. Recommended sizes for

filters are shown in Table 1.

2. Avoid abrupt duct size increases and reductions. Abrupt change in

duct size adversely affects air performance.

IMPORTANT: Use flexible connectors between ductwork and unit to

prevent transmission of vibration. Use suitable gaskets to ensure weather

tight and airtight seal. When electric heat is installed, use fireproof

canvas (or similar heat resistant material) connector between ductwork

and unit discharge connection. If flexible duct is used, insert a sheet

metal sleeve inside duct. Heat resistant duct connector (or sheet metal

sleeve) must extend 24-in. (610 mm) from electric heater element.

3. Size ductwork for cooling air quantity (cfm). The minimum air

quantity for proper electric heater operation is listed in Table 2.

Heater limit switches may trip at air quantities below those

recommended.

4. Seal, insulate, and weatherproof all external ductwork. Seal,

insulate and cover with a vapor barrier all ductwork passing

through conditioned spaces. Follow latest Sheet Metal and Air

Conditioning Contractors National Association (SMACNA) and

Air Conditioning Contractors Association (ACCA) minimum

installation standards for residential heating and air conditioning

systems.

5. Secure all ducts to building structure. Flash, weatherproof, and

vibration-isolate duct openings in wall or roof according to good

construction practices.

Configuring Units for Downflow (Vertical) Discharge

1. Open all electrical disconnects and install lockout tag before

starting any service work.

2. Remove horizontal (metal) ductcovers to access vertical

(downflow) discharge duct knockouts in unit basepan. (See Fig. 6.)

3. To remove downflow return and supply knockout covers, break

front and right side connecting tabs with a screwdriver and hammer.

Push cover down to break rear and left side tabs.

A09061

A09088

Fig. 6 – Supply and Return Duct Opening

NOTE: These panels are held in place with tabs similar to an electrical

knockout. Reinstall horizontal duct covers (Fig. 6) shipped on unit from

factory. Insure openings are air and watertight.

NOTE: The design and installation of the duct system must be in

accordance with the standards of the NFPA for installation of

nonresidence-type air conditioning and ventilating systems, NFPA 90A

or residence-type, NFPA 90B; and/or local codes and ordinances.

Adhere to the following criteria when selecting, sizing, and installing the

duct system:

1. Units are shipped for side shot installation.

2. Select and size ductwork, supply-air registers, and return-air grilles

according to American Society of Heating, Refrigeration and Air

Conditioning Engineers (ASHRAE) recommendations.

WARNING

PERSONAL INJURY HAZARD

Failure to follow this warning could result in personal injury or death.

For vertical supply and return units, tools or parts could drop into

ductwork. Install a 90 degree turn in the return ductwork between the

unit and the conditioned space. If a 90 degree elbow cannot be installed,

then a grille of sufficient strength and density should be installed to

prevent objects from falling into the conditioned space. Units with

electric heaters require 90 degree elbow in supply duct.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before performing service or maintenance operations on the system,

turn off main power to unit and install lockout tag. There may be more

than one disconnect switch.

Horizontal Duct Covers

Basepan

Downflow

(Vertical)

Supply

Knockout

Basepan

Downflow

(Vertical)

Return

Knockout

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

3. Use flexible transition between rigid ductwork and unit to prevent

transmission of vibration. The transition may be screwed or bolted

to duct flanges. Use suitable gaskets to ensure weather-tight and

airtight seal.

4. All units must have field-supplied filters or accessory filter rack

installed in the return-air side of the unit. Recommended sizes for

filters are shown in Table 1.

5. Size all ductwork for maximum required airflow (either heating or

cooling) for unit being installed. Avoid abrupt duct size increases or

decreases or performance may be affected.

6. Adequately insulate and weatherproof all ductwork located

outdoors. Insulate ducts passing through unconditioned space, and

use vapor barrier in accordance with latest issue of Sheet Metal and

Air Conditioning Contractors National Association (SMACNA)

and Air Conditioning Contractors of America (ACCA) minimum

installation standards for heating and air conditioning systems.

Secure all ducts to building structure.

7. Flash, weatherproof, and vibration-isolate all openings in building

structure in accordance with local codes and good building

practices.

A07925

Fig. 7 – Unit Leveling Tolerances

A07926

Fig. 8 – Slab Mounting Detail

Step 6 – Provide for Condensate Disposal

NOTE: Ensure that condensate-water disposal methods comply with

local codes, restrictions, and practices.

The unit disposes of condensate through a 3/4 in. NPT female fitting that

exits on the compressor end of the unit. Condensate water can be drained

directly onto the roof in rooftop installations (where permitted) or onto a

gravel apron in ground level installations. Install a field-supplied

condensate trap at end of condensate connection to ensure proper

drainage. Make sure that the outlet of the trap is at least 1 in. (25 mm)

lower than the drain-pan condensate connection to prevent the pan from

overflowing. Prime the trap with water. When using a gravel apron,

make sure it slopes away from the unit.

If the installation requires draining the condensate water away from the

unit, install a field-supplied 2 -in. (51mm) trap at the condensate

connection to ensure proper drainage. Condensate trap is available as an

accessory or is field-supplied. Make sure that the outlet of the trap is at

least 1 in. (25 mm) lower than the unit drain-pan condensate connection

to prevent the pan from overflowing. Connect a drain tube using a

minimum of field-supplied 3/4-in. PVC or field-supplied 3/4-in. copper

pipe at outlet end of the 2-in. (51 mm) trap. (See Fig. 9) Do not undersize

the tube. Pitch the drain tube downward at a slope of at least 1 in. (25

mm) every 10 ft (3 m) of horizontal run. Be sure to check the drain

trough for leaks. Prime the trap at the beginning of the cooling season

start-up.

A09052

Fig. 9 – Condensate Trap

Step 7 – Install Electrical Connections

MAXIMUM ALLOWABLE

DIFFERENCE in. (mm)

A-C

1/4 1/4 1/4

(6.35) (6.35) (6.35)

A-B B-C

OPTIONAL

RETURN

AIR

OPENING

OPTIONAL

SUPPLY

AIR

OPENING

EVAP. COIL COND. COIL

ß

(50.8mm)

CAUTION

UNIT COMPONENT DAMAGE HAZARD

Failure to follow this caution may result in damage to the unit being

installed.

1. Make all electrical connections in accordance with NEC NFPA

70 (latest edition) and local electrical codes governing such

wiring. In Canada, all electrical connections must be in

accordance with CSA standard C22.1 Canadian Electrical Code

Part 1 and applicable local codes. Refer to unit wiring diagram.

2. Use only copper conductor for connections between

field-supplied electrical disconnect switch and unit. DO NOT

USE ALUMINUM WIRE.

3. Be sure that high-voltage power to unit is within operating

voltage range indicated on unit rating plate. On 3-phase units,

ensure phases are balanced within 2 percent. Consult local

power company for correction of improper voltage and/or phase

imbalance.

4. Do not damage internal components when drilling through any

panel to mount electrical hardware, conduit, etc.

5. Route field power supply(s) away from areas that could be

damaged by lawn and garden equipment or other accidental

damage.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

The unit cabinet must have an uninterrupted, unbroken electrical

ground. This ground may consist of an electrical wire connected to the

unit ground screw in the control compartment, or conduit approved for

electrical ground when installed in accordance with NEC,NFPA 70

National Fire Protection Association (latest edition) (in Canada,

Canadian Electrical Code CSA C22.1) and local electrical codes.

TRAP

OUTLET

1-in. (25 mm) min.

2-in. (51 mm) min.

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

High-Voltage Connections

The unit must have a separate electrical service with a field-supplied,

waterproof disconnect switch mounted at, or within sight from the unit.

Refer to the unit rating plate, NEC and local codes for maximum

fuse/circuit breaker size and minimum circuit amps (ampacity) for wire

sizing.

The field-supplied disconnect may be mounted on the unit over the

high-voltage inlet hole when the standard power and low-voltage entry

points are used. See Fig. 2 and Fig. 3 for acceptable location. Remove

high voltage knockout.

See unit wiring label (Fig. 12 - Fig. 17) and Fig. 10 for reference when

making high voltage connections. Proceed as follows to complete the

high-voltage connections to the unit.

A09071

Fig. 10 – High- and Control-Voltage Connections

Single phase units:

1. Run the high-voltage (L1, L2) and ground lead into the control box.

2. Connect ground lead to chassis ground connection.

3. Locate the black and yellow wires connected to the line side of the

contactor.

4. Connect field L1 to black wire on connection 11 of the compressor

contactor.

5. Connect field wire L2 to yellow wire on connection 23 of the

compressor contactor.

Three-phase units:

1. Run the high-voltage (L1, L2, L3) and ground lead into the control

box.

2. Connect ground lead to chassis ground connection.

3. Locate the black and yellow wires connected to the line side of the

contactor.

4. Connect field L1 to black wire on connection 11 of the compressor

contactor.

5. Connect field wire L3 to yellow wire on connection 13 of the

compressor contactor.

6. Connect field wire L2 to blue wire from compressor.

Special Procedures for 208-V Operation

Control Voltage Connections

NOTE: Do not use any type of power-stealing thermostat. Unit control

problems may result.

Use no. 18 American Wire Gage (AWG) color-coded, insulated (35°C

minimum) wires to make the control voltage connections between the

thermostat and the unit. If the thermostat is located more than 100 ft

(30.5 m) from the unit (as measured along the control voltage wires), use

no. 16 AWG color-coded, insulated (35° C minimum) wires.

Standard Connections

Locate the eight (nine on 3-phase) low voltage thermostat leads in 24

volt splice box. See Fig. 10 for connection diagram. Run the low-voltage

leads from the thermostat, through the control wiring inlet hole grommet

(see Fig. 2 and Fig. 3), and into the low-voltage splice box. Provide a

drip loop before running wires through panel. Secure and strain relief all

wires so that they do not interfere with operation of unit. A gray wire is

standard on 3-phase units for connection to an economizer.

If an accessory electric heater is installed, low voltage leads from heater

must be connected to factory supplied control leads from Indoor Fan

Board P4 connector.

NOTE: If the unit 24V wires do not have a matching receptacle, cut the

24V wires from the electric heater plug, strip the ends, and wire nut

together to match the schematic connections. If the electric heater 24V

wires do not have a matching plug, cut the 24V wires from the unit

receptacle, strip the ends, and wire nut together to match the schematic

connections.

Factory wires are provided for electric heat staging W1 and W2 (W2 and

W3 on IFB). If room thermostat has only one stage of supplemental heat,

connect white and violet wires shown in Fig. 10 to second stage heat

field wire.

Some electric heaters have four control wires (plus common wire).

Consult unit wiring diagram and electric heater wiring diagram for

additional details.

Transformer Protection

The transformer is of the energy-limiting type. It is set to withstand a

30-second overload or shorted secondary condition. If an overload or

short is present, correct overload condition and check for blown fuse on

Interface Fan Board. Replace fuse as required with correct size and

rating.

Accessory Electric Heaters Installation

Electric heaters may be installed with the unit per instructions supplied

with electric heater package. See unit rating plate for factory-approved

electric heater kits.

Sequence of Operation

a. CONTINUOUS FAN

(1.) Thermostat closes circuit R to G energizing the blower

motor for continuous fan.

b. COOLING MODE

(1.) If indoor temperature is above temperature set point,

thermostat closes circuits R to G, R to Y and R to O-The

unit delivers cooling airflow.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing or servicing system, always turn off main power to

system. Tag the disconnect switch with a suitable warning label. With

disconnect switch open, move black wire from transformer (3/16 in.)

terminal marked 230 to terminal marked 208. This retaps transformer to

primary voltage of 208 vac.

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

c. ELECTRIC HEATING MODE

(1.) Thermostat closes circuit R to W/W1, or W2 and R to G.

There are no on or off delays.

d. HEAT PUMP HEATING MODE

(1.) Thermostat closes circuits R to G and R to Y. The

compressor, indoor and outdoor fans are energized.

e. HEAT PUMP HEATING WITH AUXILIARY ELECTRIC

HEAT

(1.) Thermostat closes circuits R to G, R to Y and R to W/W1 or

W2. The compressor, indoor and outdoor fans are

energized, as well as the electric heat relays.

f. DEFROST MODE

The defrost mode is automatically energized by the defrost board

during heating mode. The defrost board energizes “O” (reversing

valve) and “W2” (electric heat). It also de-energizes the outdoor

fan. When defrost is complete, unit will return to heating mode.

If room thermostat is satisfied during defrost, unit will shut down

and restart in defrost on next call for heat.

Table 1 – Physical Data

24 30 36 42 48 60

Unit Size 2 2.5 3 3.5 4 5

Shipping Weight* (lb)

(kg)

*. For 460 volt units, add 14 lb (6.4 kg) to the weight.

343

155.6

376

170.6

420

190.6

440

199.6

440

199.6

510

231.4

Compressor Quantity 1

Type Scroll

Refrigerant R-410A

Refrigerant Quantity (lb)

Quantity (kg)

7.25

3.3

11.5

5.2

10.4

4.7

10.5

4.8

10.0

4.5

13.25

6.0

Refrigerant Metering Device Indoor TXV, Outdoor Dual Accuraters

Indoor

Accurater,

Outdoor

Dual

Accuraters

Indoor TXV,

Outdoor Dual

Accuraters

Orifice ID (in)

(mm) N/A 0.080 (1)

2.03 (1) N/A

Orifice OD (in)

(mm)

0.032 (2)

0.81 (2)

0.035 (2)

0.89 (2)

0.040 (2)

1.02 (2)

0.046 (2)

1.17 (2)

0.046 (2)

1.17 (2)

0.046 (2)

1.17 (2)

Outdoor Coil

Rows...Fins/in,

face area (sq. ft.)

1...21

18.8

2...21

18.8

1...21

23.3

1...21

23.3

2...21

13.6

2...21

17.5

Outdoor Fan

Nominal Airflow (cfm)

Diameter (in.)

Diameter (mm)

Motor hp (rpm)

3000

610

1/10 (810)

3500

610

1/5 (810)

3500

660

1/5 (810)

3500

660

1/5 (810)

3500

660

1/5 (810)

3500

660

1/5 (810)

Indoor Coil

Rows...Fins/in,

face area (sq. ft.)

3...15

3.7

3...17

3.7

3...17

4.7

3...17

4.7

3...17

5.6

3...17

5.6

Indoor Blower

Nominal Airflow (cfm)

Size (in.)

Size (mm)

Motor hp (rpm)

750

10 x 10

254 x 254

1/2

950

10 x 10

254 x 254

1/2

1150

11 x 10

279 x 254

1/2

1350

11 x 10

279 x 254

3/4

1600

11 x 10

279 x 254

1750

11 x 10

279 x 254

High Pressure Switch (psig)

Cutout

Reset (Auto)

650 +/- 15

420 +/- 25

Loss-of-Charge/Low Pressure Switch (psig)

Cutout

Reset (Auto)

20 +/- 5

45 +/- 10

Return Air Filters

disposable†

†. Required filter sizes shown are based on the larger of the AHRI (Air Conditioning Heating and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300-350

ft/minute for throwaway type or 450 ft/minute for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 IN. W.C.

If using accessory filter rack refer to the filter rack installation instructions for correct filter size and quantity.

2 each 20x12x1 in.

508x305x25 mm

1 each 24x14x1in.

610x356x25 mm

24x16x1 in.

610x406x25 mm

1 each 24x16x1 in.

610x406x25 mm

24x18x1 in.

610x457x25 mm

Table 2 – Minimum Airflow for Reliable Electric Heater Operation (CFM)

SIZE 24 30 36 42 48 60

AIRFLOW (CFM) 800 1025 1250 1400 1710 1800

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A09098

Fig. 11 – Typical Installation

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221468

Fig. 12 – Connection Wiring Schematics 208/230-1-60

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221469

Fig. 13 – Ladder Wiring Schematics 208/230-1-60

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221470

Fig. 14 – Connection Wiring Schematics - 208/230-3-60

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221471

Fig. 15 – Ladder Wiring Schematics - 208/230-3-60

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221472

Fig. 16 – Connection Wiring Diagram 460-3-60

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A221473

Fig. 17 – Ladder Wiring Diagram 460-3-60

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Pre-Start-Up

Use the Start-Up Checklist supplied at the end of this book and proceed

as follows to inspect and prepare the unit for initial start-up:

1. Remove all access panels (see Fig. 23).

2. Read and follow instructions on all DANGER, WARNING,

CAUTION, and INFORMATION labels attached to, or shipped

with, unit.

3. Make the following inspections:

a. Inspect for shipping and handling damages such as broken lines,

loose parts, disconnected wires, etc.

b. Inspect all field and factory-wiring connections. Be sure that

connections are completed and tight. Ensure wires do not touch

refrigerant tubing or sharp sheet metal edges.

c. Inspect coil fins. If damaged during shipping and handling,

carefully straighten fins with a fin comb.

4. Verify the following conditions:

a. Make sure that outdoor-fan blade is correctly positioned in fan

orifice.

b. Make sure that air filter(s) is in place.

c. Make sure that condensate drain pan and trap are filled with

water to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose parts have been

removed.

5. Each unit system has 2 Schrader-type ports, one low-side Schrader

fitting located on the suction line, and one high-side Schrader

fitting located on the compressor discharge line. Be sure that caps

on the ports are tight.

Start-Up

Checking Cooling and Heating Control Operation

Start and check the unit for proper control operation as follows:

(1.) Place room thermostat SYSTEM switch or MODE control

in OFF position. Observe that blower motor starts when

FAN mode is placed in FAN ON position and shuts down

when FAN MODE switch is placed in AUTO position.

(2.) Thermostat:

When the room temperature rises to a point that is slightly

above the cooling control setting of the thermostat, the

thermostat completes the circuit between thermostat

terminal R to terminals Y, O and G.These completed circuits

through the thermostat connect contactor coil (C) (through

unit wire Y) and Indoor Fan board (through unit wire G)

across the 24-v. secondary of transformer (TRAN).

(3.) Place system switch or MODE control in HEAT position.

Set control above room temperature. Observe that

compressor, outdoor fan, and indoor blower motors start.

Observe that heating cycle shuts down when control setting

is satisfied.

(4.) When using an automatic changeover room thermostat

place both SYSTEM or MODE control and FAN mode

switches in AUTO positions. Observe that unit operates in

Cooling mode when temperature control is set to “call for

Cooling” (below room temperature), and unit operates in

Heating mode when temperature control is set to “call for

Heating” (above room temperature).

NOTE: Once the compressor has started and then has stopped, it should

not be started again until 5 minutes have elapsed. The defrost board has a

built-in 5 minute delay between cycles. The 5 minute compressor delay

also applies to heat pump heating mode.

Step 1 – Check for Refrigerant Leaks

Proceed as follows to locate and repair a refrigerant leak and to charge

the unit:

1. Locate leak and make sure that refrigerant system pressure has been

relieved and reclaimed from both high- and low-pressure ports.

2. Repair leak following Refrigerant Service procedures.

NOTE: Install a bi-flow filter drier whenever the system has been

opened for repair.

3. Add a small charge of R-410A refrigerant vapor to system and

leak-test unit.

4. Recover refrigerant from refrigerant system and evacuate to 500

microns if no additional leaks are not found.

5. Charge unit with Puron (R-410A) refrigerant, using an electronic

scale. Refer to unit rating plate for required charge.

Step 2 – Start-Up Adjustments

Complete the required procedures given in the Pre-Start-Up section

before starting the unit. Do not jumper any safety devices when

operating the unit. Do not operate the unit in Cooling mode when the

outdoor temperature is below 40°F (4°C) (unless accessory low-ambient

kit is installed).

IMPORTANT: Three-phase, scroll compressors are direction oriented.

Unit must be checked to ensure proper compressor 3-phase power lead

orientation. If not corrected within 5 minutes, the internal protector will

shut off the compressor. The 3-phase power leads to the unit must be

WARNING

FIRE, EXPLOSION, ELECTRICAL SHOCK AND

ENVIRONMENTAL HAZARD

Failure to follow this warning could result in personal injury, death or

property damage.

1. Follow recognized safety practices and wear protective goggles

when checking or servicing refrigerant system.

2. Relieve and recover all refrigerant from system before touching or

disturbing compressor plug if refrigerant leak is suspected around

compressor terminals.

3. Do not remove compressor plug until all electrical sources are

disconnected and tagged.

4. Never attempt to repair soldered connection while refrigerant

system is under pressure.

5. Do not use torch to remove any component. System contains oil

and refrigerant under pressure.

To remove a component, wear protective goggles and proceed as

follows:

a. Shut off electrical power to unit and install lockout tag.

b. Relieve and reclaim all refrigerant from system using both high-

and low-pressure ports.

c. Cut component connecting tubing with tubing cutter and

remove component from unit.

d. Carefully unsweat remaining tubing stubs when necessary. Oil

can ignite when exposed to torch flame. WARNING

EXPLOSION HAZARD

Failure to follow this warning could result in

death, serious personal injury, and/or

property damage.

Never use air or gases containing oxygen for

leak testing or operating refrigerant

compressors. Pressurized mixtures of air or

gases containing oxygen can lead to an

explosion.

607C--K: Installation Instruction

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

reversed to correct rotation. When turning backwards, the difference

between compressor suction and discharge pressures may be near zero.

Checking and Adjusting Refrigerant Charge

The refrigerant system is fully charged with Puron (R-410A) refrigerant

and is tested and factory sealed

NOTE: Adjustment of the refrigerant charge is not required unless the

unit is suspected of not having the proper Puron (R-410A) charge.

NOTE: Some units have fixed orifice refrigerant metering devices.

There is a different charging procedure for both expansion devices.

Refer to the correct procedure for your unit.

The charging label and the tables shown refer to system temperatures

and pressures in cooling mode only. A refrigerant charging label is

attached to the inside of the compressor access panel. (See Fig. 21

Subcool chart for units with TXV and superheat chart for units with

fixed orifice.) The chart includes the required liquid line temperature at

given discharge line pressures and outdoor ambient temperatures.

A superheat chart is attached to the inside of the compressor access panel

for the unit with fixed metering device. Refer to the charging procedure

on the label.

An accurate thermocouple- or thermistor-type thermometer, and a gauge

manifold are required when using the subcooling charging method for

evaluating the unit charge. Do not use mercury or small dial-type

thermometers because they are not adequate for this type of

measurement.

NOTE: Allow system to operate for a minimum of 15 minutes before

checking or adjusting refrigerant charge.

IMPORTANT: When evaluating the refrigerant charge, an indicated

adjustment to the specified factory charge must always be very minimal.

If a substantial adjustment is indicated, an abnormal condition exists

somewhere in the cooling system, such as insufficient airflow across

either coil or both coils.

Proceed as follows:

1. Remove caps from low- and high-pressure service fittings.

2. Using hoses with valve core depressors, attach low- and

high-pressure gauge hoses to low- and high-pressure service

fittings, respectively.

3. Start unit and let run until system pressures stabilize.

4. Measure and record the following:

a. Outdoor ambient-air temperature (°F [°C] db).

b. Liquid line temperature (°F [°C]) at TXV.

c. Discharge (high-side) pressure (psig).

d. Suction (low-side) pressure (psig) (for reference only).

5. Using Cooling Charging Charts compare outdoor-air temperature

(°F [°C] db) with the discharge line pressure (psig) to determine

desired system operating liquid line temperature (See Fig. 21.)

6. Compare actual liquid line temperature with desired liquid line

temperature. Using a tolerance of ±2°F (±1.1°C), add refrigerant if

actual temperature is more than 2°F (1.1°C) higher than proper

liquid line temperature, or remove refrigerant if actual temperature

is more than 2°F (1.1°C) lower than required liquid line

temperature.

NOTE: If the problem causing the inaccurate readings is a refrigerant

leak, refer to Check for Refrigerant Leaks section.

Indoor Airflow and Airflow Adjustments

NOTE: Be sure that all supply-and return-air grilles are open, free from

obstructions, and adjusted properly.

This unit is factory-set up for use with a single cooling fan speed. In

addition, this unit has the field-selectable capability to run two different

cooling fan speeds: The rated cooling fan speed (350~400 CFM/Ton)

and an enhanced dehumidification fan speed (As low as 320 CFM/Ton)

for use with either a dehumidistat or a thermostat that supports

dehumidification.

The cooling speed is marked “LOW” on the interface fan board (IFB)

(See Fig. 19). The factory-shipped settings are noted in Table 4. There

are 4 additional speed tap wires available for use in either electric

heating or cooling (For color coding on the indoor fan motor leads, see

Table 3). The additional 4 speed tap wires are shipped loose with vinyl

caps and are located in the control box, near the interface fan board

(IFB) (See Fig. 19).

Single Cooling Fan Speed Set-up (Dehumidification

feature not used)

To change cooling speed:

1. Remove the vinyl cap off of the desired speed tap wire (Refer to

Table 3 for color coding). Add the wet coil pressure drop in Table 6

to the system static to determine the correct cooling airflow speed

in Table 4 that will deliver the nominal cooling airflow as listed in

Table 1 for each size.

2. Remove the current speed tap wire from the “LOW” terminal on the

interface fan board (IFB) (See Fig. 19) and place vinyl cap over the

connector on the wire.

3. Connect the desired speed tap wire to the “LOW” terminal on the

interface fan board (IFB).

NOTE: If accessory electric heat is installed, and the electric heat fan

speed is chosen to be the same as the normal cooling fan speed, the dry

airflow must meet or exceed the minimum airflow speed specified in

Table 2 for the specific size unit.

Two Cooling Fan Speeds Set-up (Dehumidification

feature used)

IMPORTANT: Dehumidification control must open control circuit on

humidity rise above set point.

Use of the dehumidification cooling fan speed requires use of either a 24

VAC dehumidistat or a thermostat which includes control of a 24 VAC

dehumidistat connection. In either case, the dehumidification control

WARNING

EXPLOSION HAZARD

Failure to follow this warning could result in

death, serious personal injury, and/or

property damage.

Never use air or gases containing oxygen for

leak testing or operating refrigerant

compressors. Pressurized mixtures of air or

gases containing oxygen can lead to an

explosion.

WARNING

UNIT OPERATION HAZARD

Failure to follow this caution may result in unit damage.

For cooling operation, the recommended airflow is 350 to 450 cfm for

each 12,000 Btuh of rated cooling capacity. For heating operation, the

airflow must produce a temperature rise that falls within the range

stamped on the unit rating plate.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Disconnect electrical power to the unit and install lockout tag before

changing blower speed.

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Bryant II607C-19 User manual

Brand: Bryant

Model: II607C-19

Category: Heat pumps

Type: User manual

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Bryant II607C-19 User manual

Bryant II607C-19 User manual

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